子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Piercing method and apparatus | US518451 | 1995-08-23 | US5603882A | 1997-02-18 | Yoshio Takano; Hiroki Fujitani; Takehiro Koga |
| The invention is directed to an improved method and apparatus for a forward extrusion piercing which is able to pierce a long through-hole of slenderness (length/hole diameter) 5 or the like in a hot blank with a high accuracy by one stroke of the piercing punch so as to produce hollow metallic products. In the process, a hot blank forged with a determined outer shape is set on a lower die, and an upper die assembly is provided with the piercing punch, a holding guide and an upper die coaxially with the lower die. Downward movement of the upper die assembly enables the holding guide to hold the blank and then the punch moves down with a retention by a through-hole of the holding guide through which the punch passes, against transverse displacement of the punch. The tip of the punch is adapted to enter a through-hole of a receiver die at its lower stroke end in order to cut off redundant piece of the blank. | ||||||
| 102 | Method of obtaining hollow forgings by radial forging of solid blanks | US244925 | 1994-06-16 | US5572897A | 1996-11-12 | Tjurin V. Aleksandrovich; Kuroles V. Ivanovich; Lazorkin V. Andreyevich; Volodin A. Mikhaylovich |
| Method of obtaining hollow forgings by radial forging of solid blanks where generating AA of the surface of solid blank (1) or its edge is oriented longitudinal axis CC of the working surface of forging tool (3) and blank 1 is swaged in a radial direction by at least one pair of forging tools (3) first in one direction with its subsequent rotation around longitudinal axis OO and/or is moved along axis OO, is swaged in another radial direction at defromation rates approximately within 3-8% of the current cross-sectional dimensions of blank (1) with the result that the width of the contact area element is approximately within 0.121-0.124 of said current cross-sectional dimension of blank (1). | ||||||
| 103 | Blind fastener for composite materials | US531044 | 1990-05-31 | US5046348A | 1991-09-10 | John D. Pratt |
| The fastener assembly includes a generally solid pin, positioned within a tubular fastener body and a buckle sleeve. The fastener body has a generally cylindrical configuration and includes an enlarged head adjacent one end thereof, an intermediate shank portion, and a nose portion adjacent the other end thereof. The nose portion engage the buckle sleeve, and during installation causes the buckle of the buckle sleeve to form prior to workpiece contact by the interaction between the nose portion of the fastener and the leading edge of the buckle sleeve. The sleeve buckles the intersection between a trailing section and the largest inner diameter at the end of a tapered interior section. | ||||||
| 104 | Process for hot working article defining hole at the center thereof | US503592 | 1990-04-03 | US5022931A | 1991-06-11 | Hiroshi Iida |
| A process for hot working a tubular material having one open end and the other closed end including the steps of: injecting an inert gas into the hole of the material; then fastening a cap to the open end of the material in order to hermetically seal the hole; then heating the material and concurrently subjecting same to forging or the like. Then, the end to which cap has been fastened is separated from the remainder of the material, so that a final product results. The process has an advantage in that it easily, inexpensively prevents a layer transmuted due to heating from occurring in the surface of the hole. | ||||||
| 105 | Hollow article forging process | US135769 | 1987-12-21 | US4803880A | 1989-02-14 | Steven M. Hopkins; William G. Askey |
| A process for forging hollow elongated articles from superalloys and titanium alloys. The process employs preconditioned material which has low strength and high ductility. The process is performed in a forging press and has an initial step which converts a preform into a intermediate shape by press motion which produces radial outward workpiece flow. Press punch geometry is then changed and the operation continues with radial inward flow about a mandrel. | ||||||
| 106 | Process of forging large seamless ferrous-metal welding necks and other cylindrical articles | US650001 | 1976-01-19 | US4073174A | 1978-02-14 | Charles H. Moore |
| Large, heavy-duty, seamless high-pressure resistant ferrous-metal welding necks and other substantially thick-walled cylindrical articles are forged in such manner as to obtain greatly improved quality, dimensionally, metallurgically and otherwise, by the use in sequence of a certain combination of metal-forging elements; which includes a vertically disposed cylindrical female forging die member provided at its bottom with a removable disc and a surrounding circular forging kinfe; an annular metal-working and metal-displacing ring having an external diameter which is slightly less than the bore of the cylindrical female forging die member; a metal-working and metal-displacing disc which interfits with the annular metal-working and metal-displacing ring; a first round forging press follower of a diameter which is adequate to entirely cover the metal-working and metal-displacing disc and a substantial portion of the annular metal-working and metal-displacing ring; a second round forging press follower of a diameter which is slightly less than the internal diameter of the annular metal-working and metal-displacing ring. | ||||||
| 107 | Method of scoring | US3495434D | 1967-10-09 | US3495434A | 1970-02-17 | LAVINE ARTHUR A |
| 108 | Process for manufacturing ball pen points by extrusion and drawing starting from a wire | US3470603D | 1966-11-28 | US3470603A | 1969-10-07 | AZZARITI PIETRO |
| 109 | Method and apparatus for hot pressure forming and back extruding | US18358062 | 1962-03-29 | US3184945A | 1965-05-25 | HORNAK MICHAEL B; KLEIN JOHN G |
| 110 | Method of manufacture of annular metal articles | US71097658 | 1958-01-24 | US3079682A | 1963-03-05 | DUNN BAILEY WILLIAM |
| 111 | Method of making piston pins and like articles | US72988558 | 1958-04-21 | US3034201A | 1962-05-15 | MCKEE GAMMON HOWARD; O'NEILL JOSEPH A |
| 112 | Method of cold forming tubular bodies having internal undercut grooves | US70139657 | 1957-12-09 | US2917823A | 1959-12-22 | ARTHUR FLETCHER WILLIAM |
| 113 | Method and apparatus for forging | US43441354 | 1954-06-04 | US2804790A | 1957-09-03 | LEFERE MAURICE P |
| 114 | Method of cold working metal | US31561652 | 1952-10-20 | US2751676A | 1956-06-26 | BEN KAUL |
| 115 | Process and apparatus for cold shaping steel | US16176050 | 1950-05-13 | US2748932A | 1956-06-05 | BEN KAUL |
| 116 | Live shaft idler pulley | US24454251 | 1951-08-31 | US2671348A | 1954-03-09 | CHARLES MOORE CHESTER |
| 117 | Method of forming lined pressure vessel connections | US44694342 | 1942-06-13 | US2381890A | 1945-08-14 | EBBETS GEORGE D |
| 118 | Method of making lightweight cylinders | US30135039 | 1939-10-26 | US2279726A | 1942-04-14 | ALLEN SCOTT E |
| 119 | Spinneret and method of producing the same | US11948837 | 1937-01-07 | US2139568A | 1938-12-06 | ALLEN GEORGE M; BARTON GILBERT C |
| 120 | Blank for and method of making fuse-bodies | US21222618 | 1918-01-17 | US1393121A | 1921-10-11 | HEIBY CARL G; JOHN BURKAM; LINDQUIST DAVID E; RIGGIN FRED L; ALLEN EBENEZER W; RICHARD LAU |
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